Hi Fedin,

  With the aforementioned fixes i tried to run it inside libvirt-lxc. I got the following:
a) With hugepages - "abort with 256 hugepage files exceed the maximum of 8 for vhost-user" - i set -m 512

This is currently a known issue, we have discussed in another thread 
with Tetsuya.

b) With --single-file - ovs runs, but doesn't get any packets at all. When i try to ping the container from within host side, it
counts drops on vhost-user port.

Can you check the OVS in host side, if it prints out message of "virtio 
is now ready for processing"?

Thanks,
Jianfeng

Kind regards,
Pavel Fedin
Expert Engineer
Samsung Electronics Research center Russia